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Noncontrolling Interests (Tables)
9 Months Ended
Sep. 30, 2011
Noncontrolling Interests [Abstract] 
Summary of redeemable noncontrolling interests
                 
    Income
Statement
Impact
    Redeemable
Noncontrolling
Interests
 

Balance as of December 31, 2009

          $ 4,369  
     

Noncontrolling interest

  $ 582          

Redemption value change

    -       582  
   

 

 

         

Formation of noncontrolling interests

            1,390  

Distribution to noncontrolling interests

            (515
           

 

 

 

Balance as of September 30, 2010

          $ 5,826  
           

 

 

 
     

Balance as of December 31, 2010

          $ 5,799  
     

Noncontrolling interest

  $ 660          

Redemption value change

    547       1,207  
   

 

 

         

Formation of noncontrolling interests

            510  

Distribution to noncontrolling interests

            (625
           

 

 

 

Balance as of September 30, 2011

          $ 6,891